The following table provides summary statistics for contract job vacancies advertised in Essex with a requirement for TDD skills. Included is a benchmarking guide to the contractor rates offered in vacancies that have cited TDD over the 3 months to 23 June 2017 with a comparison to the same period in the previous 2 years.

Note that daily and hourly rates are treated separately in these statistics. When calculating contractor rate percentiles, daily rates are never derived from quoted hourly rates or vice versa.

Test-Driven Development (TDD)
3 months to
23 Jun 2017
Same period 2016 Same period 2015
Rank 2 22 23
Rank change year-on-year +20 +1  
Contract jobs citing TDD 144 36 41
As % of all contract IT jobs advertised in Essex 33.64% 7.48% 6.52%
As % of the Processes & Methodologies category 37.02% 9.30% 8.33%
Number of daily rates quoted 102 22 18
Median daily rate £514 £313 £400
Median daily rate % change year-on-year +64.13% -21.75%  
90% offered a daily rate of more than £402 £220 £343
10% offered a daily rate of more than £624 £450 £450
UK excluding London median daily rate £420 £413 £375
% change year-on-year +1.81% +10.00%  
Number of hourly rates quoted 7 5 0
Median hourly rate £41.50 £31.00 -
Median hourly rate % change year-on-year +33.87% -  
UK excluding London median hourly rate £41.50 £40.00 £42.50
% change year-on-year +3.75% -5.88%  

TDD is in the process and methodology skills category. The next table is for comparison with the above and provides summary statistics for all contract job vacancies advertised in Essex with a requirement for process and methodology skills.

Contract Process & Methodology Skills
Essex
Contract job vacancies with a requirement for process and methodology skills 389 387 492
As % of all contract IT job vacancies advertised in Essex 90.89% 80.46% 78.22%
Number of daily rates quoted 250 187 290
Median daily rate £500 £375 £400
Median daily rate % change year-on-year +33.33% -6.25%  
90% offered a daily rate of more than £350 £228 £290
10% offered a daily rate of more than £613 £500 £550
UK excluding London median daily rate £415 £400 £383
% change year-on-year +3.75% +4.57%  
Number of hourly rates quoted 27 93 38
Median hourly rate £36.00 £27.50 £37.50
Median hourly rate % change year-on-year +30.90% -26.66%  
90% offered a hourly rate of more than £13.72 £16.50 £16.50
10% offered a hourly rate of more than £62.50 £42.50 £46.50
UK excluding London median hourly rate £33.50 £28.50 £30.00
% change year-on-year +17.54% -5.00%  

TDD
Job Vacancy Trend in Essex

The job posting trend of jobs advertised in Essex citing TDD as a proportion of all contract or permanent IT jobs with a match in the Processes & Methodologies category.

Job vacancy trend for TDD in Essex

TDD
Contractor Daily Rate Trend in Essex

This chart provides the 3-month moving average for daily rates quoted in contract jobs citing TDD in Essex.

Contractor daily rate trend for TDD in Essex

TDD
Contractor Daily Rate Histogram in Essex

The daily rate distribution of IT jobs citing TDD in Essex over the 3 months to 23 June 2017.

Contractor daily rate histogram for TDD in Essex

TDD
Contractor Hourly Rate Trend in Essex

This chart provides the 3-month moving average for contractor hourly rates quoted in IT jobs citing TDD in Essex.

Contractor hourly rate trend for TDD in Essex

TDD
Contractor Hourly Rate Histogram in Essex

The hourly rate distribution of IT jobs citing TDD in Essex over the 3 months to 23 June 2017.

Contractor hourly rate histogram for TDD in Essex

TDD
Contract Job Locations in Essex

The table below looks at the demand and provides a guide to the median contractor rates quoted in IT jobs citing TDD within the Essex region over the 3 months to 23 June 2017. The 'Rank Change' column provides an indication of the change in demand within each location based on the same 3 month period last year.

Location Rank Change
on Same Period
Last Year
Matching
Contract
IT Job Ads
Median
Daily Rate
Last 3 Months
Median Daily Rate
% Change
on Same Period
Last Year
Live
Job
Vacancies
Southend-on-Sea - 46 £500 -
Brentwood +5 3 £284 -40.23% 3
Colchester - 3 £425 -
Basildon +1 2 - -
Saffron Walden - 1 - - 1
TDD
East of England

For the 6 months to 23 June 2017, IT contractor jobs citing TDD also mentioned the following skills in order of popularity. The figures indicate the number co-occurrences and its proportion to all contract ads across the Essex region with a requirement for TDD.

1 208 (83.20%) Agile Software Development
2 128 (51.20%) SOA
3 121 (48.40%) Continuous Integration
4 120 (48.00%) Scrum
5 104 (41.60%) Middleware
6 100 (40.00%) Jenkins
7 98 (39.20%) XML
8 97 (38.80%) Java
9 96 (38.40%) DevOps
10 93 (37.20%) Oracle
10 93 (37.20%) Test Automation
11 82 (32.80%) Kanban
12 78 (31.20%) Linux
13 76 (30.40%) JSON
14 75 (30.00%) Git (software)
14 75 (30.00%) Manufacturing
15 72 (28.80%) WSO2
16 68 (27.20%) Finance
17 66 (26.40%) Oracle SOA Suite
18 65 (26.00%) Marketing
19 63 (25.20%) Digital Marketing
19 63 (25.20%) Programme Management
19 63 (25.20%) User Stories
20 62 (24.80%) Relational Database
21 61 (24.40%) SAP Oil and Gas
21 61 (24.40%) Electronics
21 61 (24.40%) Telecoms
21 61 (24.40%) Business Intelligence
21 61 (24.40%) SAP
22 59 (23.60%) Mentoring

TDD
Co-occurring IT Skills in Essex by Category

The follow tables expand on the table above by listing co-occurrences grouped by category. The same job type, locality and period is covered with up to 20 co-occurrences shown in each of the following categories:

Application Platforms
1 66 (26.40%) Oracle SOA Suite
2 49 (19.60%) JBoss
3 38 (15.20%) Mule
4 35 (14.00%) Oracle Service Bus
5 30 (12.00%) Apache
6 29 (11.60%) Confluence
7 22 (8.80%) WebLogic
8 11 (4.40%) Adobe Experience Manager
9 10 (4.00%) WebSphere
10 7 (2.80%) CMS
11 4 (1.60%) Cloud Foundry
12 3 (1.20%) WebSphere Application Server
13 2 (0.80%) Umbraco
14 1 (0.40%) IIS
14 1 (0.40%) Jetty
14 1 (0.40%) Mongrel
14 1 (0.40%) nginx
14 1 (0.40%) Oracle HTTP Server
14 1 (0.40%) Tomcat
Applications
1 2 (0.80%) Microsoft Excel
1 2 (0.80%) Microsoft Office
1 2 (0.80%) Microsoft PowerPoint
1 2 (0.80%) MS Visio
Business Applications
1 61 (24.40%) SAP Oil and Gas
Cloud Services
1 25 (10.00%) GitHub
2 23 (9.20%) Microsoft Azure
3 11 (4.40%) Amazon AWS
4 5 (2.00%) Google Analytics
5 3 (1.20%) IaaS
5 3 (1.20%) PaaS
5 3 (1.20%) SaaS
6 1 (0.40%) Amazon EC2
6 1 (0.40%) Google App Engine
6 1 (0.40%) Google Cloud Platform
Communications & Networking
1 48 (19.20%) HTTP
2 43 (17.20%) SSL
3 41 (16.40%) TCP/IP
4 14 (5.60%) LDAP
5 4 (1.60%) Intranet
6 1 (0.40%) DHCP
6 1 (0.40%) DNS
6 1 (0.40%) FTP
6 1 (0.40%) IPsec
Database & Business Intelligence
1 62 (24.80%) Relational Database
2 17 (6.80%) MariaDB
2 17 (6.80%) MySQL
3 13 (5.20%) SQL Server
4 5 (2.00%) NoSQL
5 3 (1.20%) RDBMS
6 1 (0.40%) MongoDB
6 1 (0.40%) Oracle Database
6 1 (0.40%) PostgreSQL
6 1 (0.40%) Redis
Development Applications
1 100 (40.00%) Jenkins
2 75 (30.00%) Git (software)
3 50 (20.00%) Maven
4 46 (18.40%) JUnit
5 42 (16.80%) Subversion
6 31 (12.40%) JIRA
7 26 (10.40%) SoapUI
8 18 (7.20%) Gradle
9 16 (6.40%) JIRA Agile
9 16 (6.40%) Mockito
10 15 (6.00%) Calabash
11 12 (4.80%) Selenium
12 11 (4.40%) JMeter
12 11 (4.40%) Team Foundation Server
13 10 (4.00%) Xcode
14 8 (3.20%) Ant
15 7 (2.80%) LoadRunner
16 6 (2.40%) Android Studio
17 5 (2.00%) Cucumber
18 3 (1.20%) AccuRev
General
1 75 (30.00%) Manufacturing
2 68 (27.20%) Finance
3 65 (26.00%) Marketing
4 61 (24.40%) Electronics
4 61 (24.40%) Telecoms
5 17 (6.80%) Automotive
6 4 (1.60%) Legal
7 1 (0.40%) Games
Job Titles
1 131 (52.40%) Developer
2 49 (19.60%) Java Developer
3 44 (17.60%) Agile Developer
4 34 (13.60%) DevOps Engineer
5 33 (13.20%) SOA Developer
6 32 (12.80%) Integration Developer
7 25 (10.00%) Scrum Master
8 18 (7.20%) Android Developer
8 18 (7.20%) Senior Developer
9 16 (6.40%) Architect
10 14 (5.60%) iOS Developer
11 12 (4.80%) Agile Coach
12 11 (4.40%) .NET Developer
12 11 (4.40%) Analyst
12 11 (4.40%) ASP.NET Developer
12 11 (4.40%) Full Stack Developer
12 11 (4.40%) Test Analyst
13 9 (3.60%) Agile Scrum Master
13 9 (3.60%) Senior Java Developer
14 8 (3.20%) Middleware Engineer
Libraries, Frameworks & Software Standards
1 104 (41.60%) Middleware
2 98 (39.20%) XML
3 76 (30.40%) JSON
4 56 (22.40%) HTML
5 44 (17.60%) XSLT
6 38 (15.20%) J2EE
6 38 (15.20%) Swagger
7 36 (14.40%) Web Services
8 35 (14.00%) Apache Camel
8 35 (14.00%) WireMock
9 33 (13.20%) RESTful
10 29 (11.60%) CSS
11 27 (10.80%) SOAP
12 24 (9.60%) Core Data
13 23 (9.20%) Core Animation
13 23 (9.20%) Spring
14 22 (8.80%) REST
15 19 (7.60%) JPA
15 19 (7.60%) Spring MVC
16 18 (7.20%) AngularJS
Miscellaneous
1 43 (17.20%) Greenfield Project
2 31 (12.40%) Enterprise Software
2 31 (12.40%) Mobile App
3 23 (9.20%) Animation
4 20 (8.00%) Analytical Skills
4 20 (8.00%) Virtual Team
5 10 (4.00%) iPhone
6 9 (3.60%) Computer Science
7 7 (2.80%) Client/Server
8 5 (2.00%) Web 2.0
9 4 (1.60%) RIA
10 2 (0.80%) Clustering
10 2 (0.80%) PMI
10 2 (0.80%) Replication
11 1 (0.40%) Driving Licence
11 1 (0.40%) iPad
11 1 (0.40%) User Experience
Operating Systems
1 78 (31.20%) Linux
2 40 (16.00%) Unix
3 32 (12.80%) Red Hat Enterprise Linux
4 31 (12.40%) Mac OS X
5 24 (9.60%) Android
6 18 (7.20%) Apple iOS
7 9 (3.60%) Solaris
8 8 (3.20%) Windows
9 3 (1.20%) AIX
9 3 (1.20%) HPUX
10 1 (0.40%) Mac OS
Processes & Methodologies
1 208 (83.20%) Agile Software Development
2 128 (51.20%) SOA
3 121 (48.40%) Continuous Integration
4 120 (48.00%) Scrum
5 96 (38.40%) DevOps
6 93 (37.20%) Test Automation
7 82 (32.80%) Kanban
8 63 (25.20%) Digital Marketing
8 63 (25.20%) Programme Management
8 63 (25.20%) User Stories
9 61 (24.40%) Business Intelligence
10 59 (23.60%) Mentoring
11 58 (23.20%) Coaching
11 58 (23.20%) MVC
12 53 (21.20%) Configuration Management
13 48 (19.20%) Software Engineering
14 45 (18.00%) Microservices
14 45 (18.00%) Open Source
15 41 (16.40%) API Design
16 39 (15.60%) Pair Programming
Programming Languages
1 97 (38.80%) Java
2 49 (19.60%) JavaScript
3 44 (17.60%) XPath
4 31 (12.40%) SQL
5 24 (9.60%) C
6 23 (9.20%) Perl
7 20 (8.00%) PL/SQL
8 15 (6.00%) C#
9 12 (4.80%) Apple Swift
10 11 (4.40%) Groovy
10 11 (4.40%) Objective-C
11 10 (4.00%) C++
12 7 (2.80%) Python
13 4 (1.60%) PHP
13 4 (1.60%) Ruby
14 1 (0.40%) Shell Script
Qualifications
1 6 (2.40%) Degree
1 6 (2.40%) ISEB
1 6 (2.40%) ISTQB
1 6 (2.40%) Security Cleared
2 5 (2.00%) BPSS Clearance
2 5 (2.00%) Computer Science Degree
3 2 (0.80%) PMI Certification
3 2 (0.80%) PMP
4 1 (0.40%) CITP
4 1 (0.40%) SC Cleared
Quality Assurance & Compliance
1 6 (2.40%) QA
2 5 (2.00%) Data Quality
3 4 (1.60%) Disclosure Scotland
4 1 (0.40%) SLA
System Software
1 30 (12.00%) Docker
2 8 (3.20%) VMware Infrastructure
3 2 (0.80%) Active Directory
4 1 (0.40%) Virtual Machines
4 1 (0.40%) Xen
Systems Management
1 40 (16.00%) Opscode Chef
1 40 (16.00%) Puppet
2 24 (9.60%) Ansible
Vendors
1 93 (37.20%) Oracle
2 72 (28.80%) WSO2
3 61 (24.40%) SAP
4 10 (4.00%) Adobe
5 8 (3.20%) IBM
5 8 (3.20%) VMware
6 6 (2.40%) Google
7 5 (2.00%) Omniture
8 3 (1.20%) FatWire
8 3 (1.20%) webMethods
9 2 (0.80%) CA Agile Central
10 1 (0.40%) HP
10 1 (0.40%) Mapbox
10 1 (0.40%) Microsoft
10 1 (0.40%) Red Hat
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